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Iron Oxide Nanoparticle and Multiwalled Carbon Nanotube Modified Glassy Carbon Electrodes. Application to Levodopa Detection
Author(s) -
Baião Vanessa,
Tomé Luciana I.N.,
Brett Christopher M.A.
Publication year - 2018
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201700854
Subject(s) - carbon nanotube , materials science , glassy carbon , electrochemistry , electrode , nanoparticle , cyclic voltammetry , redox , oxide , selectivity , carbon fibers , voltammetry , iron oxide , inorganic chemistry , chemical engineering , nanotechnology , chemistry , organic chemistry , composite material , catalysis , metallurgy , composite number , engineering
The combination of iron (III) oxide nanoparticles (Fe 2 O 3 NP) with functionalized multi‐walled carbon nanotubes (MWCNT) has been used to develop a new and easily prepared modified glassy carbon electrode (GCE). The Fe 2 O 3 NP‐MWCNT/GCE were electrochemically characterized by cyclic voltammetry with the model hexacyanoferrate(III)/(II) redox probe. Their application as electrochemical sensors was demonstrated using levodopa oxidation, with excellent analytical performance. The analytical parameters compare favourably with other similar modified electrodes reported in the literature. Excellent selectivity was shown in interference studies and the determination of levodopa was carried out in pharmaceutical samples.